Proper way to tap into a wire

[boundstaffpress]

I cut the insulation off of the existing wire. Seperate the wires so there is a gap to slip your new wire into. With the new wire inserted into the gap, make a fork at the end of your new wire. Bring the wires back aroung the original wires and twist them together. Solder the whole mess, and cover with black tape or shrink tape.

This is how some of the newer cars splice wires. Hasn't ever failed me. Splice clips on the other hand are prone to failure.